Question

用FileUpload控件怎么实现多图片上传

Answer 1

FileUpload实现单图片上传，如果想多图片上传，你试试这个：
<tr>
<td align="right" valign="top">
试卷照片：
</td>
<td align="left">
<div id="_container">
<input id="File1" type="file" name="File" runat="server" size="10" />
</div>
</td>
<td align="left" valign="bottom">
<input type="button" value="添加" onclick="addFile()" />
</td>
</tr>
addFile()源码：
//多文件上传，动态生成多个上传控件
function addFile() {
var div = document.createElement("div");
var f = document.createElement("input");
f.setAttribute("type", "file");
f.setAttribute("name", "file");
f.setAttribute("size", "10");
div.appendChild(f);
document.getElementById("_container").appendChild(div);
}

后台页面调用：
#region 上传添加图片的方法
/// <summary>
/// 上传添加图片的方法
/// </summary>
/// <param name="nId">关联id</param>
private static void UploadAndAddPicTures(int nId)
{
LMS.BLL.TRAIN_Pictrue PictrueBLL = new LMS.BLL.TRAIN_Pictrue();
List<LMS.Model.TRAIN_Pictrue> list = new List<LMS.Model.TRAIN_Pictrue>();
//遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files;
for (int iFile = 0; iFile < files.Count; iFile++)
{
//检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName;
fileName = System.IO.Path.GetFileName(postedFile.FileName);
if (fileName.ToLower() != "")
{
LMS.Model.TRAIN_Pictrue Pictrue = new LMS.Model.TRAIN_Pictrue();
string scurTypeName = fileName.Substring(fileName.LastIndexOf("."));
//初始化原图物理路径
string sGuid_phy = Guid.NewGuid().ToString();
string sUrl_phy = ConfigurationManager.AppSettings["PhysicsObjectPath"].ToString() + sGuid_phy + scurTypeName;
//初始化缩略图物理路径
string sGuid_web = Guid.NewGuid().ToString();
string sUrl_web = ConfigurationManager.AppSettings["PhysicsObjectPath"].ToString() + sGuid_web + scurTypeName;
postedFile.SaveAs(sUrl_phy);//保存原图
PTImage.ZoomAuto(postedFile, sUrl_web, 100, 100, "", "");//生成缩略图，并保存
//保存原图虚拟路径到数据库
Pictrue.path = ConfigurationManager.AppSettings["WebObjectPath"].ToString() + sGuid_phy + scurTypeName;
//保存缩略图虚拟路径到数据库
Pictrue.shrinkpath = ConfigurationManager.AppSettings["WebObjectPath"].ToString() + sGuid_web + scurTypeName;
Pictrue.parid = nId;
Pictrue.tables = "TRAIN_Hotel_MonthExam";
list.Add(Pictrue);
}
}
PictrueBLL.Add(list);
}
#endregion
希望对你有帮助！

Answer 2

单存的FileUpload控件无法实现多图片上传！要做成那种多选效果一般现在用 as编写的flash控件！效果相当不错！！你可以在网上找找